US7399197B2 - Connector assembly for housing insulation displacement elements - Google Patents

Connector assembly for housing insulation displacement elements Download PDF

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Publication number
US7399197B2
US7399197B2 US10/941,441 US94144104A US7399197B2 US 7399197 B2 US7399197 B2 US 7399197B2 US 94144104 A US94144104 A US 94144104A US 7399197 B2 US7399197 B2 US 7399197B2
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US
United States
Prior art keywords
cap
electrical conductor
idc element
cavity
recess
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related, expires
Application number
US10/941,441
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English (en)
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US20060057884A1 (en
Inventor
Xavier Fasce
Guy Metral
Jerome A. Pratt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3M Innovative Properties Co
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3M Innovative Properties Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 3M Innovative Properties Co filed Critical 3M Innovative Properties Co
Priority to US10/941,441 priority Critical patent/US7399197B2/en
Assigned to 3M INNOVATIVE PROPERTIES COMPANY reassignment 3M INNOVATIVE PROPERTIES COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: METRAL, GUY, FASCE, XAVIER, PRATT, JEROME A.
Priority to MX2007002481A priority patent/MX2007002481A/es
Priority to RU2007114027/09A priority patent/RU2332760C1/ru
Priority to EP05782776A priority patent/EP1790038A1/en
Priority to BRPI0515314-0A priority patent/BRPI0515314A/pt
Priority to CNB2005800310327A priority patent/CN100524948C/zh
Priority to JP2007532327A priority patent/JP2008513954A/ja
Priority to CA002580116A priority patent/CA2580116A1/en
Priority to PCT/US2005/027847 priority patent/WO2006036302A1/en
Priority to TW094128054A priority patent/TW200623562A/zh
Priority to ARP050103809A priority patent/AR050742A1/es
Priority to US11/296,968 priority patent/US7335049B2/en
Priority to US11/296,945 priority patent/US7458840B2/en
Publication of US20060057884A1 publication Critical patent/US20060057884A1/en
Publication of US7399197B2 publication Critical patent/US7399197B2/en
Application granted granted Critical
Expired - Fee Related legal-status Critical Current
Adjusted expiration legal-status Critical

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
    • H01R4/2425—Flat plates, e.g. multi-layered flat plates
    • H01R4/2429—Flat plates, e.g. multi-layered flat plates mounted in an insulating base
    • H01R4/2433—Flat plates, e.g. multi-layered flat plates mounted in an insulating base one part of the base being movable to push the cable into the slot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/2445—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives
    • H01R4/245—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the additional means having two or more slotted flat portions
    • H01R4/2454—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members having additional means acting on the insulation or the wire, e.g. additional insulation penetrating means, strain relief means or wire cutting knives the additional means having two or more slotted flat portions forming a U-shape with slotted branches

Definitions

  • the present invention relates to insulation displacement connectors.
  • the present invention relates to a connector assembly for housing at least one insulation displacement element for use in making an electrical connection with an electrical conductor.
  • connector blocks are connected to cables that feed subscribers while other connector blocks are connected to cables to the central office.
  • jumper wires are inserted to complete the electrical circuit.
  • jumper wires can be connected, disconnected, and reconnected several times as the consumer's needs change.
  • An insulation displacement connector, or IDC, element is used to make the electrical connection to a wire or electrical conductor.
  • the IDC element displaces the insulation from a portion of the electrical conductor when the electrical conductor is inserted into a slot within the IDC element so the IDC element makes electrical connection to the electrical conductor. Once the electrical conductor is inserted within the slot with the insulation displaced, electrical contact is made between the conductive surface of the IDC element and the conductive core of the electrical conductor.
  • the IDC element is housed in an insulated housing.
  • the housing has a cap or other moveable member that is movable to press the electrical conductor into contact with the IDC element.
  • the cap closes and the user is then unable to visually verify that the electrical conductor made a proper connection with the IDC element. The user then may not be sure whether an effective connection has been made between the electrical conductor and the IDC element.
  • connection devices Another problem associated with connection devices is that inserting the electrical conductor into the IDC element slot often requires a significant force, which may require the use of special tools or devices.
  • the cap is adapted to be used as the insertion device for inserting the electrical conductors into the IDC element slots.
  • closing the cap to insert the electrical conductor into the IDC element slot may require a significant force and may strain the user's finger or hand.
  • An electrical connector for terminating at least one electrical conductor comprises a housing including a cavity for receiving at least a first IDC element, a cap including a pivot portion and a cover portion, wherein the pivot portion is pivotally mounted to the housing to allow the cap to be pivoted between an open position and a closed position, at least one recess in the pivot portion of the cap, and a cutting edge within the cavity of the housing adjacent the recess in the pivot portion of the cap.
  • FIG. 1 is an exploded perspective view of a connector assembly of the present invention.
  • FIG. 2 is an assembled perspective view of a portion of the connector assembly of the present invention, with one of a plurality of pivoting caps removed for clarity of illustration.
  • FIG. 3 is a perspective view of the underside of one of the caps.
  • FIG. 4 is a perspective view of a portion of the assembled connector unit, showing one of the caps in a pivoted open position relative to a housing.
  • FIG. 5 is a schematic sectional view through the connector unit of FIG. 4 , with an electrical conductor inserted through a recess in the cap and the cap in a fully opened position relative to the housing.
  • FIG. 6 is a schematic sectional view through the connector unit of FIG. 4 , with the electrical conductor inserted through the recess in the cap and the cap in a partially closed position relative to the housing.
  • FIG. 7 is a schematic sectional view through the connector unit of FIG. 4 , with the electrical conductor inserted through the recess being cut and the cap in a fully closed position relative to the housing.
  • FIG. 8 is a perspective view of an insulation displacement element of the present invention.
  • FIG. 9 is a front view of a U-shaped portion of a first contact of the insulation displacement element of the present invention.
  • FIG. 10 is a front view of a U-shaped portion of a second contact of the insulation displacement element of the present invention.
  • FIG. 11 is a perspective view through the connector unit (shown in phantom) showing the connection between the insulation displacement element and an electrical element.
  • FIG. 12 is a perspective view through the connector unit (shown in phantom) showing a test probe inserted between the connection of the insulation displacement element and an electrical element.
  • FIG. 1 is an exploded perspective view of the insulation displacement connector assembly 100 of the present invention.
  • the connector assembly 100 comprises a base unit 102 , a connector unit 104 , and a plurality of caps 106 .
  • the connector assembly 100 is shown disassembled.
  • the caps 106 are inserted in between lock projections 122 projecting from a rear side of the connector unit 104 and then the connector unit 104 is placed over and slid into the base unit 102 .
  • the base unit 102 comprises an insulated housing with a series of receiving slots 110 for connection with the connector unit 104 .
  • Lock slots on a rear side of the base unit 102 receive lock projections 122 of the connector unit 104 to lock the connector unit 104 to the base unit 102 .
  • Each electrical element 114 is in the form of an IDC element, and is adapted to make electrical contact with a corresponding IDC element in the connector assembly 100 , as explained below.
  • the connector unit 104 comprises an insulated housing with a series of alignment projections 120 for connection into the receiving slots 110 of the base unit 102 .
  • the lock projections 122 project outwardly and downwardly from the rear side of the connector unit 104 and lock within the lock slots on the rear side of the base unit 102 to lock the connector unit 104 to the base unit 102 .
  • Each cap 106 is independently pivotally mounted onto the connector unit 104 , relative to a respective housing 130 .
  • Each cap 106 comprises a first pivot projection 170 and a second coaxial pivot projection 172 (see FIG. 3 ) opposite the first pivot projection 170 , which enter and engage with the connector unit 104 at a gap 124 created between adjacent lock projections 122 , as they project outwardly and downwardly from the rear side of the connector unit 104 .
  • the pivot projections 170 , 172 of the cap 106 are first inserted within the gap 124 and connected to the connector unit 104 prior to the connector unit 104 being attached to the base unit 102 .
  • the first and second pivot projections 170 , 172 of the cap 106 are secured within hinge slots 148 , 150 , respectively, on adjacent lock projections 122 , and within the gap 124 to prevent the cap 106 from being removed.
  • the pivot projections 170 , 172 allow for pivoting movement of the cap 106 relative to the connector unit 104 , within the hinge slots 148 , 150 .
  • the connector unit 104 shown in FIG. 1 comprises a plurality of housings 130 and associated caps 106 .
  • a separate cap 106 is provided to cover each housing 130 .
  • Each connector assembly 100 is a self-contained unit, insulated from the next adjacent assembly 100 .
  • the connector assembly 100 may comprise any number of housings 130 , base units 102 , and caps 106 .
  • Each housing 130 , base unit 102 and cap 106 form an assembly that is adapted to receive at least one pair of electrical conductors, as explained below. Because the connector assembly 100 may comprise any number of housings 130 , base units 102 , and caps 106 there can be any number of a pair of electrical conductors, such as but not limited to one, 5, 10, or 50 pairs.
  • the connector assembly 100 may be constructed, for example, of an engineering plastic such as, but not limited to: Valox® 325 a polybutylene terephthalate (PBT) polymer, available from GE Plastics of Pittsfield, Mass.; Lexan® 500R a polycarbonate resin, flame retardant, 10% glass fiber reinforced grade available from GE Plastics of Pittsfield, Mass.; Mackrolon® 9415 a polycarbonate resin, flame retardant, 10% glass fiber reinforced grade available from Bayer Plastics Division of Pittsburgh, Pa.; or Mackrolon® 9425 a polycarbonate resin, flame retardant, 20% glass fiber reinforced grade available from Bayer Plastics Division of Pittsburgh, Pa.
  • an engineering plastic such as, but not limited to: Valox® 325 a polybutylene terephthalate (PBT) polymer, available from GE Plastics of Pittsfield, Mass.; Lexan® 500R a polycarbonate resin, flame retardant, 10% glass fiber reinforced grade available from GE Plastics of Pittsfield, Mass.; Mackrol
  • the caps 106 may be constructed, for example, of an engineering plastic such as, but not limited to: Ultem® 1100 a polyether imide resin available from GE Plastics of Pittsfield, Mass.; Valox® 420 SEO a polybutylene terephthalate (PBT) resin flame retardant, 30% glass fiber reinforced available from GE Plastics of Pittsfield, Mass.; RCEF® 1501 a polyarylamide resin, flame retardant, 30% glass fiber reinforced grade available from Solvay Advanced Polymers, LLC of Alpharetta, Ga.; or IXEF® 1521 a polyarylamide resin, flame retardant, 50% glass fiber reinforced grade available from Solvay Advanced Polymers, LLC of Alpharetta, Ga.
  • Ultem® 1100 a polyether imide resin available from GE Plastics of Pittsfield, Mass.
  • Valox® 420 SEO a polybutylene terephthalate (PBT) resin flame retardant, 30% glass fiber reinforced available from GE Plastics of Pittsfield, Mass.
  • FIG. 2 is an assembled perspective view of a portion of the connector assembly 100 of the present invention, with one of the pivoting caps 106 omitted to show the internal configuration and components of one of the housings 130 . Also, electrical conductors (i.e., wires), which would otherwise be in the housing 130 when fully assembled for operation, have been omitted to show the internal configuration and components of the housing 130 .
  • electrical conductors i.e., wires
  • Each housing 130 comprises a front wall 131 , a first side wall 132 , a second side wall 133 , and a base 134 .
  • the housing 130 is formed to have a first section 135 and a second section 137 . Separating the first section 135 from the second section 137 is a test probe slot 152 .
  • first wire groove 140 and a second wire groove 142 are disposed along the front wall 131 , which allow entry of the electrical conductors into the housing 130 (see FIG. 4 ).
  • Wire retainer projections 144 extend laterally into the grooves 140 and 142 to resiliently hold the electrical conductors within the first wire groove 140 and second wire groove 142 , and prevent the electrical conductors from moving out of the open ends of the grooves 140 , 142 .
  • a latch opening 146 is also disposed on the front wall 131 , which is capable of receiving a latch projection 190 (see FIG. 3 ) on the cap 106 to lock the cap 106 to the front wall 131 of the housing 130 and prevent the cap 106 from accidentally opening (see FIG. 4 ).
  • first hinge slot 148 Along the first side wall 132 is a first hinge slot 148 , and along the second side wall 133 is a second hinge slot 150 (see FIGS. 1 and 2 ).
  • Each hinge slot 148 , 150 is created by a portion of the gap 124 of the lock projections 122 extending out and down from the housing 130 .
  • the hinge slots 148 , 150 pivotally receive the pivot projections 170 , 172 extending laterally from the cap 106 , to allow the cap 106 to pivot along a pivot axis 173 (see FIGS. 2 and 3 ).
  • the base 134 of the housing 130 includes the test probe slot 152 , that essentially separates the first section 135 of the housing 130 from the second section 137 of the housing 130 .
  • the test probe slot 152 may be divided into two portions with the first allowing for testing of the electrical connections on the first section 135 of the housing 130 and the second allowing for testing of the electrical connections on the second section 137 of the housing 130 .
  • Test probes as are known in the art are inserted into the test probe slot 152 (see, e.g., FIG. 12 ).
  • each IDC element 300 , 301 is conductive and capable of displacing the insulation from electrical conductors to electrically couple the conductive cores of the electrical conductors to the IDC elements. Choosing appropriate materials and optional plating is well within the skill of the art.
  • the IDC elements 300 , 301 may be constructed of phosphor bronze alloy C51000 per ASTM B103/103M-98e2 with reflowed matte tin plating of 0.000150-0.000300 inches thick, per ASTM B545-97(2004)e2 and electrodeposited nickel underplating, 0.000050 inches thick minimum, per SAE-AMS-QQ-N-290 (July 2000).
  • FIG. 3 is a perspective view of the underside of the cap 106 .
  • the cap 106 includes a pivot portion 166 and a cover portion 168 . Extending laterally from the pivot portion 166 are the first pivot projection 170 and second pivot projection 172 .
  • the pivot projections 170 , 172 engage with the hinge slots 148 , 150 of the side walls 132 , 133 of the housing 130 to secure the cap 106 to the housing 130 while allowing for pivoting movement of the cap 106 along the pivot axis 173 .
  • first recess 174 and second recess 176 Extending into the pivot portion 166 is a first recess 174 and second recess 176 .
  • the recesses 174 , 176 may be a through hole extending through the entire pivot portion 166 of the cap 106 , or may extend through only a portion of the pivot portion 166 of the cap 106 .
  • the first recess 174 is aligned with the first section 135 of the housing 130
  • the second recess 176 is aligned with the second section 137 of the housing 130 .
  • Each recess 174 , 176 receives electrical conductors passing through the housing 130 .
  • the first recess 174 and second recess 176 are shown as parallel recesses through the pivot portion 166 , it is within the scope of the present invention that the first recess 174 and second recess 176 may not be parallel to one another.
  • the cover portion 168 of the cap 106 is moveable from an open position ( FIG. 4 ) to a closed position (e.g., FIG. 7 ) to cover the open top of the housing 130 .
  • Adjacent the pivot portion 166 of the cap is a first indent 162 a and a second indent 164 a .
  • a first wire hugger 178 and a first wire stuffer 180 are located on the cover portion 168 , adjacent the first section 135 of the housing 130 .
  • a second wire stuffer 184 and a second wire hugger 182 are located on the cover portion 168 adjacent the second section 137 of the housing 130 .
  • the first wire hugger 178 and first wire stuffer 180 engage an upper exposed surface of the electrical conductor.
  • the first wire stuffer 180 (being aligned with a first IDC element 300 ) follows and pushes the electrical conductor into the first IDC element 300 . ( FIG. 6 ).
  • a similar closing occurs at the second IDC element 301 .
  • the second wire stuffer 184 is arranged on the cap 106 accordingly (i.e., the positions of the wire stuffers 180 and 184 are staggered radially relative to the pivot axis 173 ).
  • the overall length of the wire stuffers 180 , 184 may be uniform or may be different from one another depending on the sequencing desired for pushing the electrical conductors into the IDC elements 300 , 301 .
  • Extending through the center of the cover portion 168 is a test probe slot cap 186 , which partially enters the test probe slot 152 when the cap 106 is closed.
  • a resilient latch 188 which is capable of flexing relative to the cover portion 168 of the cap 106 , is located on the cover portion 168 of the cap 106 .
  • the resilient latch 188 flexes so that the latch projection 190 on the resilient latch 188 can enter the latch opening 146 on the front wall 131 of the housing 130 .
  • the latch projection 190 is engaged with the latch opening 146
  • the cap 106 is secured to the housing 130 and will not open.
  • a release lever 192 on the resilient latch 188 is pressed rearwardly to disengage the latch projection 190 from the latch opening 146 . Then, the cap 106 can be pivoted open, as shown in FIG. 4 , for access to the cavity within the housing 130 and electrical conductors and IDC elements therein.
  • FIG. 4 is a perspective view of the connector unit 104 showing a housing 130 with the cap 106 attached in an open position. Again, the electrical conductors have been omitted in FIG. 4 to show the internal configuration and components of the housing 130 . However, first electrical conductor 200 and second electrical conductor 206 can be seen extending from the adjacent housing.
  • the first IDC element 300 and a first blade 162 are located at the base 134 of the first section 135 of the housing 130 .
  • the first blade 162 is located adjacent the pivot portion 166 of the cap 106 .
  • a first support 163 with a generally U-shape to support and cradle an electrical conductor when inserted into the housing 130 is positioned in front of the first blade 162 .
  • the first support 163 supports the electrical conductor so that the first blade 162 can properly and effectively cut the electrical conductor. Then, the first blade 162 enters the first indent 162 a on the cap 106 .
  • the second IDC element 301 and a second blade 164 are located at the base 134 of the second section 137 of the housing 130 .
  • the second blade 164 is located adjacent the pivot portion 166 of the cap 106 .
  • a second support 165 with a generally U-shape to support and cradle an electrical conductor when inserted into the housing 130 is positioned in front of the second blade 164 .
  • the second support 165 supports the electrical conductor so that the second blade 164 can properly and effectively cut the electrical conductor. Then, the second blade 164 enters the second indent 164 a on the cap 106 .
  • the first blade 162 and second blade 164 may be constructed of a metallic material and have a slightly sharpened edged, as is more clearly shown in FIGS. 5-7 .
  • the blades may be constructed of stainless steel alloy S30100, full hard temper, per ASTM A666-03.
  • the blades 162 , 164 may be constructed of a component extending from the base 134 of the housing 130 , and therefore be non-metallic. In such a case, the blades 162 , 164 may also have a slightly sharpened edge, which creates a pinch point to cut the electrical conductors when the cap 106 is moved to a closed position.
  • two electrical conductors may be inserted into each section 135 , 137 of the housing 130 and into the recesses 174 , 176 , respectively, to be cut by the blades 162 , 164 , respectively.
  • the first blade 162 and second blade 164 shown in FIG. 4 are symmetrically arranged within the housing 130 .
  • first and second blades 162 , 164 may be staggered (radially displaced relative to the pivot axis 173 ) or may have different heights relative to the base 134 of the housing 130 .
  • staggering the blades 162 , 164 or varying the heights of the blades 162 , 164 it is possible to vary the sequencing of cutting the electrical conductors, thereby minimizing the force needed to close the cap 106 and cut the electrical conductors.
  • FIG. 4 shows the linear arrangement of the first IDC element 300 on the first section 135 of the housing 130 and the second IDC element 301 on the second section 137 of the housing 130 .
  • the first wire groove 140 , first IDC element 300 , first support 163 , first blade 162 , and first recess 174 in the cap 106 are generally linearly arranged along a first plane 136 within the first section 135 of the housing 130 .
  • the second wire groove 142 , second IDC element 301 , second support 165 , second blade 164 , and second recess 176 in the cap 106 are generally linearly arranged along a second plane 138 .
  • the first IDC element 300 and the second IDC element 301 are off-set (i.e., radially staggered) from one another along their respective planes, 136 , 138 .
  • the second IDC element 301 is closer to the pivot portion 166 of the cap 106 than the first IDC element 300 .
  • This staggering of the first IDC element 300 and second IDC element 301 minimizes the force needed to be applied to the cap 106 to properly close the cap 106 and engage all electrical conductors in each IDC element, because the electrical conductors are not being forced into their respective IDC elements at the same time during closure.
  • the electrical conductor for the IDC element closest to the pivot portion 166 of the cap 106 (second IDC element 301 ) is pressed into engagement first, and the electrical conductor at the IDC element farthest from the pivot portion 166 of the cap 106 (first IDC element 300 ) is pressed into engagement last.
  • the cutting of the electrical conductors during cap 106 closure (at each blade 162 , 164 ) can occur during insertion but prior to final insertion is reached or can occur before the electrical conductors are inserted into their respective IDC elements 301 , 300 , which further minimizes the forces needed to close the cap 106 while making the proper connections.
  • first IDC element 300 and the second IDC element 301 are shown staggered relative to the pivot axis 173 , the first IDC element 300 and second IDC element 301 may be uniformly arranged within the housing 130 . Further, the first IDC element 300 and the second IDC element 301 may have different heights relative to the base 134 of the housing 130 such that electrical conductors will first be inserted into the higher IDC element, and then into the lower IDC element. As mentioned above, the blades 162 , 164 may also be staggered or have varying heights and the wire stuffers 180 , 184 may also have different lengths. Sequencing the insertion of the electrical conductors into the IDC elements, along with sequencing the cutting of the electrical conductor, minimizes the forces needed to close the cap 106 while making the proper connections.
  • the housing 130 as shown and described has a first section 135 and a second section 137 with essentially similar components on each section, the housing 130 may include a single set of components like the wire groove, recess in the pivot portion, IDC element, blade, support, etc.
  • an electrical conductor which includes a conductive core surrounded by an insulation layer, is inserted into the first section 135 of the housing 130 and into the first recess 174 .
  • a similar electrical conductor can likewise be inserted into the second section 137 and into the second recess 176 .
  • two electrical conductors may be inserted into each section of the housing 130 .
  • FIGS. 5 , 6 , and 7 illustrate the effective alignment and electrical coupling arrangement of the present invention.
  • the first IDC element 300 has a first contact 302 and a second contact 303 .
  • the first contact 302 has a first insulation displacement slot 311 therein and the second contact 303 has a second insulation displacement slot 321 therein, with those insulation displacement slots configured to receive, in an electrically conductive manner, an electrical conductor (see FIGS. 8 , 9 , and 10 for further description of the first and second contacts 302 , 303 of the first IDC element 300 ).
  • FIG. 5 is a schematic sectional view through the first section 135 of one of the housings 130 , as taken along plane 136 ( FIG. 4 ).
  • the cap 106 is in an open position, and an electrical conductor 200 passes through the first recess 174 in the cap 106 .
  • a distal end 200 a of the electrical conductor 200 is inserted into the first section 135 of the housing 130 and into the first recess 174 .
  • the electrical conductor 200 is aligned over the first IDC element 300 and first wire groove 140 .
  • FIG. 6 is a schematic sectional view through the first section 135 of one of the housings 130 , as taken along plane 136 ( FIG. 4 ) with the electrical conductor 200 through the first recess 174 in the cap 106 and the cap 106 in the process of being closed, by application of force F on its upper surface. Proximally from the distal end 200 a , the electrical conductor 200 passes through the first wire groove 140 (see FIGS. 4 and 6 ). To make the electrical connection between the electrical conductor 200 and first IDC element 300 , a user begins to close the cap 106 by application of force F. As can be seen, the surface of the cap 106 is curved so as to allow a user's finger or thumb to easily engage and ergonomically close the cap 106 .
  • first wire stuffer 180 and first wire hugger 178 approach an upper exposed surface of the electrical conductor 200 and begin to make contact therewith.
  • the electrical conductor 200 is thus urged into contact with first support 163 , which is adjacent the first blade 162 .
  • FIG. 7 is a schematic sectional view through the first section 135 of one of the housing 130 , as taken along plane 136 ( FIG. 4 ) with an electrical conductor cut and the cap 106 in a closed position.
  • the electrical conductor 200 includes a conductive core 204 surrounded by an insulation sheath layer 202 (see FIG. 9 and 10 ).
  • the electrical conductor 200 enters the second insulation displacement slot 321 and then enters the first insulation displacement slot 311 within the first IDC element 300 .
  • the insulation displacement slots 321 , 311 have at least one part that is narrower than the overall electrical conductor 200 such that the insulation sheath layer 202 is displaced and the conductive core 204 makes electrical contact with the conductive IDC element.
  • the resilient latch 188 flexes so that the latch projection 190 can engage with the latch opening 146 on the front wall 131 of the housing to lock the cap 106 in it closed position (see FIG. 4 ).
  • the electrical conductor 200 extends proximally out of the housing 130 at the first wire groove 140 (see FIG. 4 ).
  • the first wire stuffer 180 has entirely pressed and followed the electrical conductor 200 into the first insulation displacement slot 311 of the first contact 302 and the second insulation displacement slot 321 of the second contact 303 (see FIG. 8 ).
  • the electrical conductor 200 has rested on the first support 163 and the pressure of the cap 106 on the electrical conductor 200 at the first blade 162 has severed the electrical conductor 200 .
  • the electrical conductor 200 remaining includes a proximal connected portion electrically connected to the first IDC element 300 and a distal unconnected portion 200 a , which had extended through the first recess 174 .
  • Electrical conductor 200 has been severed adjacent the first recess 174 , and the distal unconnected portion 200 a is no longer electrically connected to the first IDC element 300 .
  • no portion of the electrical conductor 200 which extends through the cap 106 is in electrical contact with the first IDC element 300 .
  • the first recess 174 passes entirely through the cap 106 and so the distal unconnected portion 200 a of the electrical conductor 200 may be discarded.
  • the first and second recesses 174 , 176 on the underside of the cap 106 may be generally circular (see FIG. 3 ). However, as can be seen in FIGS. 1 , 2 , 4 , and 5 - 7 , ends 174 a and 176 a of the first and second recesses 174 , 176 visible on a top surface of the cap 106 have an oval shape. The oval shape allows a user better access to the distal unconnected portion 200 a of electrical conductor 200 passing through the recesses 174 , 176 , and thus makes it easier to discard this waste. It is preferable that the recesses 174 , 176 are through holes as shown in FIG. 7 so that the unconnected portion can be removed. However, the recesses 174 , 176 may be openings in the pivot portion 166 of the cap 106 such that the cut portion of the electrical conductor remains in the recesses 174 , 176 when the cap 106 is closed.
  • the cap 106 When the cap 106 is closed, the cap 106 may entirely seal the housing 130 . Additionally, a gel or other sealant material may be added to the housing 130 prior to the closure of the cap 106 to create a moisture seal within the housing 130 when the cap 106 is closed. Sealant materials useful in this invention include greases and gels, such as, but not limited to RTV® 6186 mixed in an A to B ratio of 1.00 to 0.95, available from GE Silicones of Waterford, N.Y.
  • Gels which can be described as sealing material containing a three-dimensional network, have finite elongation properties which allow them to maintain contact with the elements and volumes they are intended to protect.
  • Gels which are useful in this invention, may include formulations which contain one or more of the following: (1) plasticized thermoplastic elastomers such as oil-swollen Kraton triblock polymers; (2) crosslinked silicones including silicone oil-diluted polymers formed by crosslinking reactions such as vinyl silanes, and possibly other modified siloxane polymers such as silanes, or nitrogen, halogen, or sulfur derivatives; (3) oil-swollen crosslinked polyurethanes or ureas, typically made from isocyanates and alcohols or amines; (4) oil swollen polyesters, typically made from acid anhydrides and alcohols.
  • Other gels are also possible.
  • Other ingredients such as stabilizers, antioxidants, UV absorbers, colorants, etc. can be added to provide additional functionality if desired.
  • Useful gels will have ball penetrometer readings of between 15 g and 40 g when taken with a 0.25 inch diameter steel ball and a speed of 2 mm/sec to a depth of 4 mm in a sample contained in a cup such as described in ASTM D217 (3 in diameter and 2.5 in tall cylinder filled to top). Further, they will have an elongation as measured by ASTM D412 and D638 of at least 150%, and more preferred at least 350%. Also, these materials will have a cohesive strength, which exceeds the adhesive strength of an exposed surface of the gel to itself or a similar gel.
  • Representative formulations include gels made from 3-15 parts Kraton G1652 and 90 parts petroleum oil, optionally with antioxidants to slow decomposition during compounding and dispensing.
  • the cap 106 When the cap 106 is closed, the user cannot visually see if the electrical conductor 200 is properly in place within the first IDC element 300 . However, the user is able to verify that the proximal portion of the electrical conductor 200 is properly extending through the first wire groove 140 and that the distal end 200 a of the electrical conductor 200 has been cut by the blade 162 . With the ability to verify that each end of the electrical conductor 200 has been properly placed, the user can interpolate that the middle of the electrical conductor 200 has been properly aligned and inserted into the IDC element.
  • the positioning and additionally the height from the base 134 of the housing 130 of the first IDC element 300 , second IDC element 301 , first blade 162 , and second blade 164 all assist in reducing the forces necessary for making the electrical connection between the electrical conductors 200 , 206 and the IDC elements 300 , 301 .
  • the positioning and length of the first wire stuffer 180 and second wire stuffer 184 may also be manipulated to assist in reducing the forces necessary for closing the cap 106 and making the electrical connections.
  • the present invention effectively allows for a distribution of the forces necessary for cutting the electrical conductor and electrically coupling the electrical conductor to the IDC element through the use of a pivoting cap, without the use of special closure tools by effectively sequencing the cutting of the electrical conductors and insertion of the electrical conductor into the contacts.
  • the electrical conductors are first cut at the blade either simultaneously or sequentially, depending on the arrangement of the blade. Then, as the cap continues to close, the wire stuffers sequentially stuff the electrical conductors into the first and second contacts of the second IDC element 301 and then into the first and second contacts of the first IDC element 300 , when arranged as shown in FIG. 4 . Because of the arced shape of the closing cap and the staggering of the IDC elements, the stuffing of the wires into the IDC elements does not occur all at once but sequentially, further reducing the closure force. After the electrical conductors are in place, the cap is snapped shut.
  • a second electrical conductor 206 may be inserted on top of the electrical conductor 200 . It is preferable that the first electrical conductor 200 be entirely inserted first and then the cap 106 opened to receive the second electrical conductor 206 .
  • the second electrical conductor 206 would be inserted just as the first electrical conductor 200 was inserted as described above and shown in FIGS. 5-7 . There may be instances where both electrical conductors may be inserted at once. The insertion of the electrical conductor 200 has been discussed with respect to only the first section 135 of the housing.
  • FIG. 8 is a perspective view of the first IDC element 300 .
  • the first IDC element 300 includes the first contact 302 and the second contact 303 , which are electrically connected to one another by a bridging section 304 .
  • a resilient tail 305 Extending below and biased from the bridging section 304 is a resilient tail 305 .
  • a raised tab 306 projecting from the tail 305 helps make an electrical connection to another element.
  • the tail 305 extends in a direction towards the test probe slot 152 (see FIGS. 11 and 12 ).
  • the first contact 302 has a generally U-shape, including a first leg 307 and a second leg 309 spaced from one another to form a first insulation displacement slot 311 .
  • the first insulation displacement slot 311 has a wide portion 312 and a narrow portion 314 .
  • the wide portion 312 is located adjacent the open end of the first insulation displacement slot 311
  • the narrow portion 314 is located intermediate the wide portion 312 and the closed end of the first insulation displacement slot 311 .
  • the second contact 303 also has a generally U-shape similar to the first contact 302 , including a first leg 317 and a second leg 319 spaced from one another to form a second insulation displacement slot 321 .
  • the second insulation displacement slot 321 has a wide portion 324 and a narrow portion 322 .
  • the wide portion 324 of the second insulation displacement slot 321 is opposite to the wide portion 312 of the first insulation displacement slot 311 .
  • the first leg 317 and the second leg 319 are spaced farther from one another than at the narrow portion 322 .
  • the narrow portion 322 is located adjacent the open end of the second insulation displacement slot 321
  • the wide portion 324 is located intermediate the narrow portion 322 and the closed end of the second insulation displacement slot 321 .
  • the first leg 307 and second leg 309 displace the insulation sheath 202 covering the first electrical conductor 200 so that the conductive core 204 makes electrical contact with the legs 307 , 309 .
  • the first leg 317 and second leg 319 displace the insulation sheath 208 covering the second electrical conductor 206 so that the conductive core 210 makes electrical contact with the legs 317 , 319 . Therefore, the first and second electrical conductors 200 , 206 are electrically connected to the first IDC element 300 , and are electrically connected to one another.
  • the second IDC element 301 is similar to the first IDC element 300 . However, its tail extends in the opposite direction. The tail of the second IDC element 301 extends towards the center to the test probe slot 152 .
  • the second IDC element 301 may also be configured with first and second contacts having wide portions and narrow portions. The wide portion and narrow portions may be configured in reverse order, relative to the first IDC element 300 (as considered from a radial perspective relative to the pivot axis 173 ).
  • the IDC element is shown having a first contact 302 and a second contact 303 , it is understood that the IDC element may be an IDC element with just one contact. Also, the IDC element of the present invention may or may not have the wide portion and narrow portion described with respect to the IDC element shown in the FIGS. and in particular in FIG. 8 . Further description of various insulation displacement connector elements and combinations thereof for use with the housing of the present invention is described in U.S. patent application Ser. No. 10/941,506 titled “INSULATION DISPLACEMENT SYSTEM FOR TWO ELECTRICAL CONDUCTORS” filed on even date, the disclosure of which is hereby incorporated by reference.
  • any standard telephone jumper wire with PCV insulation may be used as the electrical conductor.
  • the wires may be, but are not limited to: 22 AWG (round tinned copper wire nominal diameter 0.025 inches (0.65 mm) with nominal PVC insulation thickness of 0.0093 inches (0.023 mm)); 24 AWG (rounded tinned copper wire nominal diameter 0.020 inches (0.5 mm) with nominal PVC insulation thickness of 0.010 inches (0.025 mm); 26 AWG (rounded tinned copper wire nominal diameter 0.016 inches (0.4 mm) with nominal PVC insulation thickness of 0.010 inches (0.025 mm).
  • FIG. 11 is a perspective view through the connector unit 104 (shown in phantom) showing the connection between the first IDC element 300 and an electrical element 114 .
  • the first IDC element 300 is positioned in the connector unit 104 with the tail 305 extending into the base unit 102 (not shown).
  • the electrical element 114 is an IDC element, which makes electrical connection with cables that may be connected to the office or the subscriber.
  • the electrical element 114 has a tail 114 a that resiliently and electrically contacts the tail 305 of the first IDC element 300 .
  • FIG. 12 is a perspective view through the connector unit 104 (shown in phantom) showing a test probe 350 inserted between the connection of the first IDC element 300 and the electrical element 114 .
  • the test probe 350 is first inserted through the test probe slot 152 (see FIG. 2 and FIG. 4 ).
  • the test probe 350 is capable of breaking the contact between the first IDC element 300 tail 305 and the tail 114 a of the electrical element 114 . Breaking this connection and using a test probe, as is known in the art, allows the tester to electrically isolate a circuit on both sides of the test probe 305 at the IDC tail connection and thus to test both ways for problems.
  • FIGS. 11 and 12 show the electrical connection between the first IDC element 300 and electrical element 114 , it is understood that the second IDC element 301 would also make a connection to another electrical element (similar to the element 114 shown and described). However, the second IDC element 301 is positioned on the second section 137 of the housing and therefore on the opposite side of the test probe slot 152 .
  • the test probe 350 is capable of entering the test probe slot 152 and breaking the resilient connection between the tail of the second IDC element 301 and the tail of the other electrical element (the tail orientations would be similar to that described above, but in reverse).

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US10/941,441 2004-09-15 2004-09-15 Connector assembly for housing insulation displacement elements Expired - Fee Related US7399197B2 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
US10/941,441 US7399197B2 (en) 2004-09-15 2004-09-15 Connector assembly for housing insulation displacement elements
PCT/US2005/027847 WO2006036302A1 (en) 2004-09-15 2005-08-05 Connector assembly for housing insulation displacement elements
RU2007114027/09A RU2332760C1 (ru) 2004-09-15 2005-08-05 Соединительная сборка для корпусных прорезающих изоляцию элементов
EP05782776A EP1790038A1 (en) 2004-09-15 2005-08-05 Connector assembly for housing insulation displacement elements
BRPI0515314-0A BRPI0515314A (pt) 2004-09-15 2005-08-05 conector elétrico, e, método de inserir um condutor elétrico em um elemento idc
CNB2005800310327A CN100524948C (zh) 2004-09-15 2005-08-05 装有绝缘去除元件的连接器组件
JP2007532327A JP2008513954A (ja) 2004-09-15 2005-08-05 絶縁変位素子を収容するコネクタアセンブリ
CA002580116A CA2580116A1 (en) 2004-09-15 2005-08-05 Connector assembly for housing insulation displacement elements
MX2007002481A MX2007002481A (es) 2004-09-15 2005-08-05 Conjunto de conectores para alojar elementos de desplazamiento de aislacion.
TW094128054A TW200623562A (en) 2004-09-15 2005-08-17 Connector assembly for housing insulation displacement elements
ARP050103809A AR050742A1 (es) 2004-09-15 2005-09-13 Conjunto de conectores para alojar elementos de desplazamiento de aislacion
US11/296,968 US7335049B2 (en) 2004-09-15 2005-12-08 Connector assembly for housing insulation displacement elements
US11/296,945 US7458840B2 (en) 2004-09-15 2005-12-08 Cap configured to removably connect to an insulation displacement connector block

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/941,441 US7399197B2 (en) 2004-09-15 2004-09-15 Connector assembly for housing insulation displacement elements

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US11/296,945 Continuation-In-Part US7458840B2 (en) 2004-09-15 2005-12-08 Cap configured to removably connect to an insulation displacement connector block
US11/296,968 Continuation-In-Part US7335049B2 (en) 2004-09-15 2005-12-08 Connector assembly for housing insulation displacement elements

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US20060057884A1 US20060057884A1 (en) 2006-03-16
US7399197B2 true US7399197B2 (en) 2008-07-15

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US10/941,441 Expired - Fee Related US7399197B2 (en) 2004-09-15 2004-09-15 Connector assembly for housing insulation displacement elements

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US (1) US7399197B2 (pt)
EP (1) EP1790038A1 (pt)
JP (1) JP2008513954A (pt)
CN (1) CN100524948C (pt)
AR (1) AR050742A1 (pt)
BR (1) BRPI0515314A (pt)
CA (1) CA2580116A1 (pt)
MX (1) MX2007002481A (pt)
RU (1) RU2332760C1 (pt)
TW (1) TW200623562A (pt)
WO (1) WO2006036302A1 (pt)

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US20110207364A1 (en) * 2007-08-24 2011-08-25 Guy Metral Termination tool, insulation displacement connector (idc) block and method for electrically connecting an electrical conductor to an idc block
US20120322294A1 (en) * 2009-12-23 2012-12-20 Erni Electronics Gmbh Device for receiving a cable conductor in a contacting manner
US9184515B1 (en) * 2012-09-28 2015-11-10 Anthony Freakes Terminal blocks for printed circuit boards
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TWI297559B (en) * 2006-03-06 2008-06-01 3M Innovative Properties Co Cross connect terminal block
CN101496228B (zh) * 2006-07-24 2012-03-21 3M创新有限公司 包括被构造用于连接至印刷电路的绝缘置换元件的连接器组件
US7547226B2 (en) * 2007-02-22 2009-06-16 Juergen Koessler Wire connectors for surge protectors and other electrical components
US7530836B2 (en) * 2007-04-30 2009-05-12 3M Innovative Properties Company Cap for telecommunications cross connect block
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US20110207364A1 (en) * 2007-08-24 2011-08-25 Guy Metral Termination tool, insulation displacement connector (idc) block and method for electrically connecting an electrical conductor to an idc block
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US8740638B2 (en) * 2009-12-23 2014-06-03 Erni Production Gmbh & Co. Kg Device for receiving a cable conductor in a contacting manner
US9184515B1 (en) * 2012-09-28 2015-11-10 Anthony Freakes Terminal blocks for printed circuit boards
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US9444159B2 (en) * 2013-07-24 2016-09-13 Erni Production Gmbh & Co. Kg Terminal for contacting an electrical conductor
US9419361B2 (en) * 2014-09-23 2016-08-16 Tyco Electronics Corporation Electrical connector with pivot block for terminating an electrical wire

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RU2332760C1 (ru) 2008-08-27
CN101019275A (zh) 2007-08-15
CN100524948C (zh) 2009-08-05
EP1790038A1 (en) 2007-05-30
AR050742A1 (es) 2006-11-15
JP2008513954A (ja) 2008-05-01
WO2006036302A1 (en) 2006-04-06
BRPI0515314A (pt) 2008-07-15
CA2580116A1 (en) 2006-04-06
MX2007002481A (es) 2007-05-11
US20060057884A1 (en) 2006-03-16
TW200623562A (en) 2006-07-01

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